Etymology and distribution of 小刀.

The Japanese surnames etymology dictionary.
https://play.google.com/store/apps/details?id=info.jigensha.jcedfreeGoogle Play で手に入れよう https://apps.apple.com/us/app/id1471109324
↑オフライン検索できるアプリもどうぞ

Ratio of 小刀.

カンマ区切りで複数の名字を指定できます。

Etymology of 小刀

Distribution of 小刀
Ranking
1 Hiroshima-ken(0.00159%)
2 Fukui-ken(0.000956%)
3 Wakayama-ken(0.000342%)
4 Hokkaidou(0.00014%)
5 Aichi-ken(Very rare)
6 Oosaka-fu(Very rare)